How can we improve the OneDrive web experiences?

There should be some way to download all files at once

It is impractical to have to go through each folder selecting files to download. Either this is a huge oversight by the design team, or you intentionally made it as tough as possible for people to manage the amount of data they use in OneDrive in order to force people to have to pay for additional data - which while may increase profit, also increases irritation among your consumers. Please address this ASAP.